EP4049741A1 - Dispositif de nettoyage pour un filtre à poussières industriel - Google Patents

Dispositif de nettoyage pour un filtre à poussières industriel Download PDF

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Publication number
EP4049741A1
EP4049741A1 EP22156051.9A EP22156051A EP4049741A1 EP 4049741 A1 EP4049741 A1 EP 4049741A1 EP 22156051 A EP22156051 A EP 22156051A EP 4049741 A1 EP4049741 A1 EP 4049741A1
Authority
EP
European Patent Office
Prior art keywords
tube
nozzle
pipe
cleaning device
receptacle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP22156051.9A
Other languages
German (de)
English (en)
Other versions
EP4049741B1 (fr
EP4049741C0 (fr
Inventor
Lothar Schenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Green Process Engineering GmbH
Original Assignee
Siccadania GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siccadania GmbH filed Critical Siccadania GmbH
Publication of EP4049741A1 publication Critical patent/EP4049741A1/fr
Application granted granted Critical
Publication of EP4049741B1 publication Critical patent/EP4049741B1/fr
Publication of EP4049741C0 publication Critical patent/EP4049741C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04—Cleaning filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element

Definitions

  • the invention relates to a cleaning device for an industrial dust filter, which is composed of tubular filter elements arranged in a filter chamber and provided with an opening at one end.
  • Such cleaning devices are used in industrial dust filters, as z. B. from the U.S. 6,022,388 , the DE 36 18 020 A1 or the DE 103 20 486 A1 are known.
  • a multiplicity of mutually parallel filter elements e.g. B. filter bags or filter tubes arranged vertically.
  • a horizontal partition separates the dusty air space of the filter from its clean air space.
  • the filter elements protrude under their own weight into the dusty air space below, so that they are exposed to the dusty gas to be filtered, e.g. As air flows through.
  • there is a support cage in each filter element usually made of steel wire.
  • the filter elements are open at their upper end so that they are connected to the clean air space above the dividing floor.
  • the clean air room is usually operated at a lower pressure than the dusty air room.
  • the filter elements have to be cleaned frequently because they become clogged on the outside after a certain period of operation.
  • a widespread method of cleaning consists of blowing compressed air in pulses through the openings at the top into the individual filter elements by reversing the direction of filtration.
  • nozzles pointing downwards are arranged above the filter elements.
  • Several nozzles arranged in a row and each assigned to a filter element are connected to a common nozzle pipe, which is supplied with the compressed air required for cleaning.
  • the nozzle tube which in this respect forms a distributor, can be connected to a compressed air reservoir via a rapidly switching valve. Through the almost sudden opening of the valve Compressed air first into the nozzle tube, and then through the nozzles attached to the side from above into the filter elements.
  • the invention is therefore based on the task of making the components required for compressed air cleaning in a cleaning device for an industrial dust filter easy to assemble and maintain.
  • Nozzles directed into the filter elements are part of the cleaning device, with several of the nozzles being connected to a common nozzle pipe which can be connected to a compressed air source in a valve-controlled manner.
  • the nozzle tube extends with its tube axis between two walls of the dust filter. These walls can be the container walls of the filter housing or can be vertical partitions which divide the interior of the filter housing into zones or which only stiffen the filter housing.
  • a first end section of the nozzle tube is radially supported with its inside or outside on a first tube receptacle which is fastened to one of the two walls.
  • a second, ie the other, end section of the nozzle tube is supported radially with its inside or outside on a second tube receptacle. This second pipe mount is located in the area of the other of the two walls.
  • the length of the nozzle tube is less than the distance, measured on the tube axis and thus considered, between the two tube receptacles that are stationary with respect to the filter housing.
  • the length of the nozzle pipe is greater than the shortest Distance between the two pipe mounts.
  • the end sections of the nozzle tube and the respective tube receptacle are therefore designed to be displaceable with respect to one another in the direction of the tube axis.
  • the nozzle tube and the tube receptacles are in particular designed in such a way that the nozzle tube, guided by the tube receptacles, can always be moved back along its tube axis if a locking mechanism, which will be described later, is not activated.
  • the nozzle tube In the unlocked state, the nozzle tube is therefore not rigidly attached in the direction of its tube axis, but can be displaced.
  • the prerequisite is that the length of the nozzle pipe measured on the pipe axis and thus considered is less than the distance between the two walls and at the same time greater than the shortest distance between the first and second pipe receptacle.
  • the nozzle pipe To dismantle the nozzle pipe, it is first pushed in the direction of one end of the pipe until the other end of the pipe is released from its pipe receptacle. The nozzle pipe is then moved slightly to the side at the end of the pipe that has been freed in this way, and can then be completely removed from the opposite pipe receptacle by an opposite longitudinal movement.
  • a preferred embodiment is characterized by a releasable blocking element for securing at least the displacement position of the nozzle tube.
  • a blocking element is arranged only on one of the two end sections of the nozzle tube, ie only this tube end is secured against longitudinal displacement and preferably also against twisting.
  • the blocking element is preferably located only at the end of the nozzle tube facing away from the compressed air supply. This is because the nozzle pipe is dismantled and later reassembled from this end alone.
  • securing the rotational position of the nozzle tube is also important. Because only in a certain rotational position is it guaranteed that the nozzles are correctly aligned with the filter elements to be cleaned. Therefore, to secure the rotational position of the nozzle tube, it is proposed that a securing section formed on the blocking element engages in a blocking structure on the respective tube receptacle in a form-fitting manner. Preferably both the securing portion and the locking structure are within the nozzle tube.
  • the blocking structure can e.g. B. be a groove or a notch on the end face of the pipe receptacle facing the nozzle pipe.
  • the blocking element as a whole is preferably designed as a spring-elastic clip.
  • the securing section that ensures the correct rotational position of the nozzle pipe is a section of the clasp that runs through the nozzle pipe transversely to the pipe axis.
  • the blocking element be fixed with a first engagement area on the end section of the nozzle pipe and be releasably locked with a second engagement area on the pipe receptacle.
  • the blocking element including the engagement areas, is designed as a spring-elastic clip, no special tool, or any tool at all, is required either during assembly or during disassembly of the nozzle tube.
  • the first engagement area of the blocking element is fixed in at least one opening in the wall of the nozzle tube and the second engagement area is locked in a fastening structure formed on the tube receptacle.
  • the first engagement area is divided in two, with the two parts being fixed in different openings in the wall of the nozzle tube, and with the central axes of these openings being offset from one another. Due to the offset and preferably also due to the shape of the blocking element, the blocking element, which is preferably designed as a spring-elastic clip, is under pretension. A reliable and nevertheless easily detachable longitudinal fixation of the nozzle tube on the tube mount is achieved.
  • the fastening structure formed on the tube seat is preferably formed on a longitudinal section of the tube seat which is located between the end face of the nozzle tube and the wall.
  • the fastening structure is, for example, a circumferential groove on the tube seat. In this circumferential groove, in the locked state, a partly correspondingly designed clip section of the spring-elastic clip engages in a form-fitting manner.
  • This wall can be the outer wall of the dust filter or an intermediate wall which divides the interior of the filter housing into zones or which strengthens the filter housing.
  • one of the two walls between which the nozzle pipe extends is a wall with vertical wall surfaces arranged centrally in the dust filter, and if nozzle pipes are arranged on both sides of this wall. Therefore, a further pipe receptacle for a further nozzle pipe is formed on the insert body on the side of the wall facing away from the first pipe receptacle, the further pipe receptacle being designed as a mirror image of the first pipe receptacle. Two nozzle pipes are thus securely fixed to a single insert body.
  • the insert body is preferably composed of the pipe receptacles facing away from one another and a central section arranged between them, the central section in turn being composed of a cylindrical longitudinal section seated in the opening in the wall and a flange section supported axially against the wall.
  • the corresponding tube receptacle can either be designed as a cap, ie radially support the end section of the nozzle tube on its outside.
  • the reverse configuration is preferred, in which the tube receptacle extends into the end section of the nozzle tube in the manner of a spigot or a socket and therefore supports it radially from the inside.
  • a particularly preferred embodiment therefore provides that the inside of the first end section of the nozzle tube is radially supported on the first tube receptacle.
  • the one described here and in figure 1 to 6 dust filters shown for industrial use, e.g. B. in the milk processing industry consists primarily of a vertically built filter housing with a preferably cylindrical wall 8, which encloses a filter chamber with a plurality of filter elements 3 arranged therein.
  • a horizontal partition 1 divides the filter space into a dust gas space 2 below and a clean gas space 4 above.
  • the partition 1 is similar to a tube base and has a large number of preferably round openings for vertically inserted, elongated filter elements 3.
  • the filter elements 3 are are elements made of tube-like or bag-like shaped or pleated filter material.
  • the filter elements can be reinforced on the inside by supporting baskets. They are closed at their lower end and have an opening 3A into the clean gas space 4 at their upper end at the level of the separating base 1 .
  • the filter elements 3 can be hooked into the openings of the separating base 1 from above.
  • the effective filter surface is primarily formed by the outer surfaces of the filter elements.
  • Dust-laden gas or dust-laden air enters the dust-gas space 2 via an inlet nozzle 6A in the wall 8 .
  • the dust contained therein adheres to the outside of the filter elements 3 .
  • the filter elements 3 must therefore be cleaned from time to time and thus regenerated.
  • nozzles 5 of a pressure pulse injector system are located above the openings 3A.
  • a strong jet of air is briefly emitted from above via the nozzles 5 into the openings 3A of the filter elements 3, as a result of which the filter elements are cleaned of the dust filtered out on their outer surfaces or the product containing dust.
  • the dust collects at the bottom of the filter housing, for which purpose a dust discharge 6B is arranged there.
  • the cleaned gas leaves the filter at the level of clean gas compartment 4.
  • nozzles 5 one nozzle 5 being assigned to a filter element 3 arranged underneath, are located in series with one another on a common nozzle tube 10.
  • the nozzle tubes 10 can be provided with corresponding radial openings and thus nozzles in a simplest embodiment , which are each aligned with the filter element 3 arranged underneath.
  • the nozzles 5 are short, bush-like collars whose axes are aligned radially with respect to the central tube axis A of the nozzle tube 10 .
  • Each of the nozzle tubes 10 arranged parallel to one another in the filter housing extends between a vertical wall 8, which is also the outer wall of the filter housing here, and a further vertical wall 7, which is an inner wall reinforcing the filter housing in the manner of a cross member without a room-dividing function.
  • the 2 shows an example of two of the nozzle tubes 10, including their respective fastenings in the area of the outer wall 8 on the one hand and the wall 7 on the other.
  • the nozzle tubes 10 are of such a length that they extend over several filter elements 3 at the same time, so that the ones arranged at the bottom of the nozzle tubes 10 Nozzles can blow compressed air into the filter elements 3 from above.
  • each nozzle pipe 10 is connected to a pipe socket inside the filter housing.
  • the pipe socket forms a pipe receptacle 32 for the relevant end section 12 of the nozzle pipe 10 and is part of a compressed air supply 14.
  • the compressed air supply 14 is a flow connection which protrudes into the filter housing and leads to this through the wall 8 of the filter housing, which the nozzle pipe 10 via a fast-acting valve , which is located outside the filter housing, connects to a compressed air tank 17, which is also located outside the filter housing.
  • the nozzle pipes 10 themselves are internally and externally smooth cylindrical pipes which end at their first end section 11 in a first end face perpendicular to the pipe axis A, and also at their second end section 12 in a second end face perpendicular to the pipe axis A.
  • the pipe receptacles 32 are cylindrical pipe sockets, it is not necessary to adapt the end sections 12 to the curved shape of the wall 8 there. the inside 2
  • the second end section 12 of the nozzle tube shown on the left is slipped onto the tube receptacle 32 designed as an open tube socket, which in turn is part of the compressed air supply 14 .
  • the pipe socket 32 has a slightly smaller diameter than the diameter of the nozzle pipe 10, so that the second end section 12 of the nozzle pipe sits with its inner surface on the outer surface of the pipe socket 32, but without being pressed on.
  • a seal can be arranged between the two, preferably an O-ring.
  • the opposite first end section 11 of the nozzle tube 10 is also supported with its inner jacket on a tube mount, here the first tube mount 31.
  • the first tube mount 31 is located on an insert body 30 fastened in the wall 7.
  • the first Pipe receptacle 31 is not a pipe socket, which is why compressed air can only flow into the nozzle pipe 10 at the second pipe receptacle 32 , but no compressed air can escape via the first end section 11 and the first pipe receptacle 31 . Rather, compressed air exits exclusively via the nozzles 5 .
  • Both tube receptacles 31, 32 are essentially rigid with respect to the respective wall 7 or 8.
  • nozzle tube 10 For complete dismantling of the nozzle tube 10, no changes to the tube mounts 31, 32 are required. This is achieved in that the nozzle tube 10 is not rigidly fastened in the longitudinal direction of its tube axis A, but instead the nozzle tube is basically designed to be displaceable in the direction of the tube axis A. This creates the prerequisite for a particularly simple and therefore maintenance-friendly assembly and disassembly of the nozzle tube 10.
  • the length of the nozzle pipe 10 measured or considered on the pipe axis A is less than the distance between the two walls 7, 8 and at the same time greater than the shortest distance between the two pipe receptacles 31, 32.
  • the manual dismantling of the nozzle tube 10 takes place completely in the area of the first end section 11, ie from the wall 7.
  • the nozzle tube 10 is first on the axis A is pushed in the direction of the second tube mount 32 until the first end section 11 is released from the pin-shaped tube mount 31 .
  • the nozzle tube is then moved slightly to the side at the first end section 11 and can then also be completely pulled off the opposite tube receptacle 32 by means of a longitudinal movement in the opposite direction. No tools are required for this type of disassembly, and analogously for the subsequent reverse assembly of the nozzle tube.
  • the nozzle tube 10 In the correctly installed condition, as in 2 reproduced, the nozzle tube 10 must be secured in the position thus assumed, both in the direction of the tube axis A and also in the direction of rotation. Because only with a specific rotational position is it guaranteed that the nozzles 5 are correctly aligned with the filter elements 3 .
  • the securing of the provisionally correctly positioned nozzle pipe 10 takes place in the longitudinal direction and in the direction of rotation exclusively in the area of the wall 7 and thus in the area of the first end section 11 of the nozzle pipe.
  • Both safeguards are achieved by one and the same blocking element in the form of a clip 40 made of spring wire.
  • the clasp 40 is designed to engage in the nozzle pipe 10 on the one hand and to lock in the first pipe receptacle 31 on the other hand.
  • the insert body 30 is composed of the two tube receptacles 31, 33 and a middle section arranged between them.
  • the middle section in turn is composed of a cylindrical longitudinal section 35 seated in a cylindrical opening in the wall 7 and a flange section 36 supported axially against the wall 7.
  • the flange section 36 forms a stop which is used for the correct longitudinal seating of the insert body 30 in the wall 7 worries.
  • the further pipe receptacle 33 is designed as a mirror image of the first pipe receptacle 31 and is used to hold and fasten another nozzle pipe on the other side of the wall 7. If required, two nozzle pipes 10 aligned with one another can therefore be fixed to the insert body 30 at the same time.
  • the pipe receptacle 31 like the other pipe receptacle 33, is designed in the form of a peg and protrudes over a certain length into the first end section 11 of the nozzle pipe 10.
  • the first end section 11 is therefore supported radially on the first pipe receptacle 31.
  • the first pipe receptacle 31 is preferably provided with a circumferential groove along the length of the first end section 11 in which an O-ring is accommodated so that it seals the inner wall of the nozzle pipe 10 against the outside of the first pipe receptacle 31 .
  • a groove is formed which extends in the circumferential direction.
  • a completely circumferential groove can be advantageous here in terms of production technology.
  • the groove serves as a fastening structure 41 for the releasable locking of the locking element 40 designed as a clasp.
  • the clip 40 is fixed to the nozzle tube 10 with a first engagement area 43 and can be releasably locked in the fastening structure 41 with a second engagement area 44 .
  • the second engagement area 44 of the clasp 40 is bow-shaped, with the bow lying in an arc in the fastening structure 41 designed as a groove, and thus securing the longitudinal position of the nozzle tube 10 relative to the tube receptacle 31 .
  • the first engagement area 43 of the clip 40 on the nozzle pipe side is divided in two, with a first arm of the engagement area being fixed in a first opening 51 and a second arm in a second opening 52 in the wall of the nozzle pipe 10 .
  • the two openings 51, 52 are arranged offset to one another, here in the longitudinal direction of the nozzle tube 10.
  • This type of fastening of the clip 40 to the nozzle tube means that the clip 40 is under spring tension with the result that the bow-shaped second engagement area 44 of the Clasp 40 sits under slight spring tension in the attachment structure 41 and is locked therein.
  • This locking can be canceled by mutual pressure under the ends of the bow-shaped second engagement area 44 and the clasp 40 can be pivoted in this unlocked position by a tilting movement about the axis of the opening 52 and then fixed. No tools are required for this.
  • the possibility of fixing the clasp 40 in the unlocked state also facilitates the assembly and disassembly of the nozzle tube 10.
  • the clip-like blocking element 40 is designed in such a way that it not only serves to block in the longitudinal direction, but also to secure the rotational position of the nozzle tube 10.
  • part of the clasp 40 made of bent wire is a securing section 60 which passes through the nozzle pipe 10 transversely to the pipe axis A.
  • the securing section 60 also extends through two opposite openings 52 in the nozzle tube 10 and is therefore non-rotatable in relation to the tube axis A.
  • the securing section 60 engages in a form-fitting manner in a locking structure 61 on the pipe receptacle 31.
  • the locking structure 61 is a groove or notch on the end face of the pipe receptacle 31 facing the nozzle pipe. Both the securing section 60 and the locking structure 61 are located inside of the nozzle tube 10.
  • the securing section 60 must enter the locking structure 61 axially. If this is not successful, the rotational position of the nozzle tube 10 is not correct.
  • divider 30 insert body 2 dust gas space 31 first pipe shot 3 filter element 32 second tube mount 3A opening 33 further pipe recording 4 clean gas room 5 jet 6A inlet port 35 cylindrical longitudinal section 6B dust discharge 36 flange section 7 Wall 8th Wall 40 Clasp, locking element 9 41 mounting structure 10 nozzle pipe 43 first intervention area 11 first end section 43a intervention area 12 second end section 43b intervention area 44 second intervention area 14 compressed air supply 51 opening 17 compressed air tank 52 opening 60 fuse section 61 locking structure A pipe axis

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP22156051.9A 2021-02-24 2022-02-10 Dispositif de nettoyage pour un filtre à poussières industriel Active EP4049741B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021104429.4A DE102021104429A1 (de) 2021-02-24 2021-02-24 Reinigungsvorrichtung für ein industrielles Staubfilter

Publications (3)

Publication Number Publication Date
EP4049741A1 true EP4049741A1 (fr) 2022-08-31
EP4049741B1 EP4049741B1 (fr) 2023-10-18
EP4049741C0 EP4049741C0 (fr) 2023-10-18

Family

ID=80447433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22156051.9A Active EP4049741B1 (fr) 2021-02-24 2022-02-10 Dispositif de nettoyage pour un filtre à poussières industriel

Country Status (4)

Country Link
EP (1) EP4049741B1 (fr)
DE (1) DE102021104429A1 (fr)
ES (1) ES2968059T3 (fr)
PL (1) PL4049741T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116036738A (zh) * 2022-11-16 2023-05-02 广东吉康环境系统科技有限公司 一种低温干化除尘清灰装置及控制方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302228A (en) * 1980-10-15 1981-11-24 The Air Preheater Company, Inc. Header pipe attachment
DE3618020A1 (de) 1986-05-28 1987-12-03 Walther & Cie Ag Staubgasfilter
US5180110A (en) * 1990-08-14 1993-01-19 Hosokawa Micron Australia Pty. Ltd. Blow tube removal
US6022388A (en) 1996-01-23 2000-02-08 Abb Flakt Ab Device for cleaning filter elements
DE10320486A1 (de) 2003-05-08 2004-12-02 Intensiv-Filter Gmbh & Co. Kg Reinigungsvorrichtung für ein Bündel rohrförmiger, an einem Ende offen ausgebildeter Filterelemente, vorzugsweise eines industriellen Staubfilters
AU2006200263A1 (en) * 2005-02-22 2006-09-07 Mikropul Australia Pty Ltd Dust collection apparatus
DE102008048589A1 (de) * 2008-09-23 2010-03-25 Mikropul Gmbh Feinstaubfilter mit Druckstoßabreinigung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4302228A (en) * 1980-10-15 1981-11-24 The Air Preheater Company, Inc. Header pipe attachment
DE3618020A1 (de) 1986-05-28 1987-12-03 Walther & Cie Ag Staubgasfilter
US5180110A (en) * 1990-08-14 1993-01-19 Hosokawa Micron Australia Pty. Ltd. Blow tube removal
US6022388A (en) 1996-01-23 2000-02-08 Abb Flakt Ab Device for cleaning filter elements
DE10320486A1 (de) 2003-05-08 2004-12-02 Intensiv-Filter Gmbh & Co. Kg Reinigungsvorrichtung für ein Bündel rohrförmiger, an einem Ende offen ausgebildeter Filterelemente, vorzugsweise eines industriellen Staubfilters
AU2006200263A1 (en) * 2005-02-22 2006-09-07 Mikropul Australia Pty Ltd Dust collection apparatus
DE102008048589A1 (de) * 2008-09-23 2010-03-25 Mikropul Gmbh Feinstaubfilter mit Druckstoßabreinigung

Also Published As

Publication number Publication date
EP4049741B1 (fr) 2023-10-18
DE102021104429A1 (de) 2022-08-25
ES2968059T3 (es) 2024-05-07
PL4049741T3 (pl) 2024-03-18
EP4049741C0 (fr) 2023-10-18

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